Sheet metal die and sheet metal processing device

Abstract

The utility model discloses a sheet metal mold and a sheet metal machining device. The metal plate die comprises a female die assembly and a male die assembly. The female die assembly is used for bearing a workpiece, and the workpiece comprises a first part protruding out of the female die assembly. The male die assembly comprises a rotatable male die, the male die is used for being in contact with the first part in a face-to-face contact mode, the center of a rotating shaft of the male die coincides with the center of a bending arc of the first part, and the male die assembly is configured to be in a driven state. The male die rotates around the center of a rotating shaft of the male die so that the male die can bend the workpiece through the first part. Thus, in the metal plate die, the center of the rotating shaft of the male die is located in the center of the bending arc of the first part, when a material to be bent is bent, the male die makes contact with a workpiece in a face-to-face contact mode, and bending marks can be avoided to the maximum extent through extrusion generated by rotation.

Description

Technical Field

[0001] The present application relates to the technical field of sheet metal processing, and more specifically, to a sheet metal mold and a sheet metal processing device. Background Art

[0002] At present, when a sheet metal processing device bends a metal plate, since the contact between the metal plate and the die is line-surface contact, it is easy for multiple bending marks to remain on the surface of the processed metal plate, thereby affecting the appearance of the metal plate. Utility Model Content

[0003] The embodiments of the present application provide a sheet metal mold and a sheet metal processing device that can solve the problem of bending marks remaining on a workpiece during sheet metal mold processing.

[0004] A sheet metal mold in an embodiment of the present application includes a die assembly and a punch assembly, wherein the die assembly is used to carry a workpiece, and the workpiece includes a first portion protruding from the die assembly; the punch assembly includes a rotatable punch, and the punch is used to contact the first portion in a surface-to-surface contact manner, and the center of the rotation axis of the punch coincides with the center of the bending arc of the first portion, and the punch assembly is configured so that when driven, the punch rotates around the center of the rotation axis of the punch so that the punch bends the workpiece through the first portion.

[0005] In the above sheet metal mold, since the center of the rotating axis of the punch is located at the center of the bending arc of the first part, and the contact between the punch and the workpiece is surface-to-surface contact, when bending the material to be bent, the extrusion generated by the rotation can avoid the generation of bending marks to the greatest extent.

[0006] In some embodiments, the die assembly includes a guide block, the guide block includes a first arc surface, the punch includes a second arc surface, the first arc surface is in contact with the second arc surface, and the guide block is used to guide the rotation of the punch through the cooperation between the first arc surface and the second arc surface when the punch rotates around the center of the punch's rotation axis.

[0007] In this way, by setting a guide block in the sheet metal mold, and when the punch rotates, the arc surface of the guide block can cooperate with the arc surface of the punch, thereby guiding the rotation of the punch and supporting the punch when the punch stops, preventing the punch from continuing to rotate and affecting the bending angle of the workpiece.

[0008] In certain embodiments, the sheet metal mold includes an upper mold base, the punch assembly includes a connecting rod, a connecting rod fixing base and an upper stripping plate, the connecting rod fixing base is installed on the upper mold base, one end of the connecting rod is rotatably connected to the connecting rod fixing base, the other end of the connecting rod is rotatably connected to the punch, the punch is rotatably connected to the upper stripping plate, and the upper mold base is configured such that when it is driven, the upper mold base drives the connecting rod to move to drive the punch to rotate around the center of the punch's rotation axis.

[0009] In this way, by arranging a connecting rod, a connecting rod fixing seat and an upper stripping plate in the sheet metal mold, the support required for the rotation of the punch can be provided, and the upper mold seat driving connecting rod can provide the power required for the punch to rotate around the center of the punch's rotation axis.

[0010] In certain embodiments, when the sheet metal mold is in a closed state, the angle between the axis of the connecting rod and the direction of gravity is less than 25 degrees to reduce the stress on the connecting rod.

[0011] In this way, by adjusting the angle between the connecting rod axis and the gravity direction to less than 25 degrees when the sheet metal mold is in a closed state, the stress on the connecting rod can be reduced, preventing the connecting rod from being damaged by the drive of the upper mold base, thereby increasing the service life of the connecting rod.

[0012] In some embodiments, the sheet metal mold includes a support plate and an elastic member, the support plate and the punch assembly are respectively located on opposite sides of the upper mold base, the support plate is fixedly connected to the upper mold base, the elastic member passes through the upper mold base, one end of the elastic member is connected to the support plate, and the other end of the elastic member is spaced apart from the upper release plate, and the support plate is configured such that when it is driven, the support plate presses the upper release plate through the elastic member to drive the elastic member to squeeze the upper release plate.

[0013] In this way, by arranging an elastic part and a support plate in the sheet metal mold, and connecting one end of the elastic part to the support plate, when the support plate is driven, the support plate can squeeze the elastic part so that the elastic part can fix the workpiece, and the elastic part can play a buffering role during the bending process to avoid damage to the workpiece during the driving process.

[0014] In some embodiments, the sheet metal mold includes a fixed shaft, the fixed shaft is fixedly connected to the upper stripping plate, and the male mold is rotatably connected to the fixed shaft.

[0015] In this way, by fixing a fixed shaft on the upper stripping plate, the punch can be rotatably connected around the fixed shaft, so that the punch can bend the workpiece when it rotates around the fixed shaft.

[0016] In certain embodiments, the sheet metal mold includes a contour sleeve, which connects the upper mold base and the upper stripping plate, and the contour sleeve is used to fix the upper stripping plate.

[0017] In this way, by arranging the equal-height sleeve in the sheet metal mold, and the equal-height sleeve connecting the upper mold base and the upper stripping plate, the upper stripping plate can be fixed and supported when the sheet metal mold is in an open mold state.

[0018] In some embodiments, the sheet metal mold includes an upper mold base, a lower mold base and a limiting column, the concave mold assembly is arranged on the side of the lower mold base facing the upper mold base, the punch mold assembly is arranged on the side of the upper mold base facing the lower mold base, the limiting column connects at least one of the upper mold base and the lower mold base, and the limiting column is used to limit the distance between the upper mold base and the lower mold base when the sheet metal mold is in a closed state to control the bending angle of the workpiece.

[0019] In this way, by setting a limit column between the upper die base and the lower die base, the limit column can limit the distance between the upper die base and the lower die base, and the driving member cannot continue to drive the upper die base to move, thereby controlling the bending angle of the workpiece and improving the accuracy of the workpiece to reach the preset angle.

[0020] In some embodiments, the die assembly includes a die and a die fixing block, the die is disposed on the die fixing block, the die fixing block is disposed on the lower die seat, and the lower die seat is used to carry the die fixing block.

[0021] In this way, by arranging a die and a die fixing block in the sheet metal mold, the workpiece on the die is driven by the upper stripping plate and squeezed onto the die by the driving member, so that the die and the die fixing block can fix and carry the workpiece during the bending process.

[0022] The sheet metal processing device of the embodiment of the present application includes the sheet metal mold and the driving component described in any one of the above items.

[0023] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a sheet metal processing device according to certain embodiments of the present application;

[0026] Figure 2It is a schematic diagram of the structure of a sheet metal mold in some embodiments of the present application;

[0027] Figure 3 is a schematic diagram of a structure in which a workpiece is bent at 0 degrees in some embodiments of the present application;

[0028] Figure 4 is a schematic diagram of a structure in which a workpiece is bent 30 degrees in some embodiments of the present application;

[0029] Figure 5 is a schematic diagram of a structure in which a workpiece is bent 60 degrees in certain embodiments of the present application;

[0030] Figure 6 It is a schematic diagram of the structure of a workpiece bent 90 degrees in certain embodiments of the present application.

[0031] Figure Number:

[0032] 100. Sheet metal processing device; 10. Sheet metal mold; 11. Concave die assembly; 111. Concave die; 112. Concave die fixing block; 113. Guide block; 1131. First arc surface; 12. Punch die assembly; 121. Punch; 1211. Second arc surface; 122. Connecting rod; 123. Connecting rod fixing seat; 124. Upper stripping plate; 13. Upper die seat; 14. Support plate; 15. Elastic member; 16. Fixed shaft; 17. Lower die seat; 18. Limiting column; 19. Equal height sleeve; 20. Driving member; 200. Workpiece; 210. First part; B1. Center of rotating axis; B2. Center of bending arc. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0034] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0036] In the embodiments of the present application, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] See also Figure 1 and Figure 2 A sheet metal mold 10 according to an embodiment of the present application includes a die assembly 11 and a punch assembly 12. The die assembly 11 is used to carry a workpiece 200. The workpiece 200 includes a first portion 210 protruding from the die assembly 11; the punch assembly 12 includes a rotatable punch 121. The punch 121 is used to contact the first portion 210 in a surface-to-surface contact manner. The rotation axis center B1 of the punch 121 coincides with the bending arc center B2 of the first portion 210. The punch assembly 12 is configured such that when driven, the punch 121 rotates around the rotation axis center B1 of the punch 121 so that the punch 121 bends the workpiece 200 through the first portion 210.

[0038] Thus, in the above-mentioned sheet metal mold 10, since the rotation axis center B1 of the punch 121 is located at the bending arc center B2 of the first part 210, when the material to be bent is bent, the contact between the punch 121 and the workpiece 200 is surface-to-surface contact, and the extrusion generated by the rotation can avoid or reduce the bending marks to a certain extent.

[0039] The sheet metal processing device 100 is a machine for bending a workpiece 200 into a desired shape, and includes a sheet metal mold 10 and a driving member 20. The working principle of the sheet metal processing device 100 is to fix the workpiece 200 on a workbench and contact the sheet metal mold 10, and then tighten the upper and lower molds inward through hydraulic or mechanical operation to bend the sheet, and perform a series of operations such as folding and cutting according to a preset angle. The workpiece 200 includes but is not limited to metal sheets, plastic sheets, etc.

[0040] Specifically, the sheet metal processing device 100 includes a sheet metal mold 10 and a driving member 20. The sheet metal mold 10 can be used to process a workpiece 200 so that the workpiece 200 is bent to a preset angle. The driving member 20 can be a pneumatic sheet metal processing device or a hydraulic press, etc. The driving member 20 can provide the power required by the sheet metal mold 10 to bend the workpiece 200.

[0041] The sheet metal mold 10 includes a die assembly 11 and a punch assembly 12. The die assembly 11 can be used to fix and support the workpiece 200, and when the workpiece 200 is placed on the die assembly 11, the first portion 210 of the workpiece 200 to be bent protrudes out of the die assembly 11.

[0042] The punch assembly 12 includes a rotatable punch 121. The punch 121 may be in the shape of a sector column, and the side of the sector column may contact the side of the first portion 210 of the workpiece 200, and the rotation axis center B1 of the punch 121 may coincide with the bending arc center B2 of the first portion 210. Thus, the punch assembly 12, driven by the driving member 20, may drive the punch 121 to rotate around the rotation axis center B1 of the punch 121, so that the first portion 210 of the workpiece 200 is squeezed and bent around the bending arc center B2 under the rotation of the punch 121, thereby bending the first portion 210 to a preset angle.

[0043] See also Figure 2In some embodiments, the die assembly 11 includes a guide block 113, the guide block 113 includes a first arc surface 1131, the punch 121 includes a second arc surface 1211, the first arc surface 1131 is in contact with the second arc surface 1211, and the punch 121 limit block is used to guide the rotation of the punch 121 through the cooperation between the first arc surface 1131 and the second arc surface 1211 when the punch 121 rotates around the rotation axis center B1 of the punch 121.

[0044] In this way, by setting a guide block 113 in the sheet metal mold 10, and when the punch 121 rotates, the arc surface of the guide block 113 can cooperate with the arc surface of the punch 121, thereby guiding the rotation of the punch 121 and supporting the punch 121 when the punch 121 stops, preventing the punch 121 from continuing to rotate and affecting the bending angle of the workpiece 200.

[0045] Specifically, the sheet metal mold 10 includes a guide block 113, which can provide guidance to the punch 121 when the punch 121 rotates, and can provide support to the punch 121 when the punch 121 stops rotating. The guide block 113 can be in the shape of a quadrangular prism, and the guide block 113 includes a first curved surface 1131, which is arranged on the side of the quadrangular prism, and the first curved surface 1131 can contact the second curved surface 1211 of the punch 121. When the punch 121 rotates around the rotation axis center B1 of the punch 121, the first curved surface 1131 and the second curved surface 1211 cooperate with each other to guide the direction and angle of rotation of the punch 121. When the punch 121 stops rotating around the rotation axis center B1 of the punch 121, the friction force between the first curved surface 1131 and the second curved surface 1211 can support the punch 121 and prevent the punch 121 from continuing to move under the influence of gravity, thereby improving the accuracy of the bending angle of the workpiece 200.

[0046] See also Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes an upper mold base 13, the punch assembly 12 includes a connecting rod 122, a connecting rod fixing base 123 and an upper stripping plate 124, the connecting rod fixing base 123 is installed on the upper mold base 13, one end of the connecting rod 122 is rotatably connected to the connecting rod fixing base 123, the other end of the connecting rod 122 is rotatably connected to the punch 121, the punch 121 is rotatably connected to the upper stripping plate 124, and the upper mold base 13 is configured such that when being driven, the upper mold base 13 drives the connecting rod 122 to move to drive the punch 121 to rotate around the rotation axis center B1 of the punch 121.

[0047] In this way, by setting a connecting rod 122, a connecting rod fixing seat 123 and an upper release plate 124 in the sheet metal mold 10, the support required for the rotation of the punch 121 can be provided, and the upper mold seat 13 drives the connecting rod 122 to provide the power required for the punch 121 to rotate around the rotation axis center B1 of the punch 121.

[0048] Specifically, the sheet metal mold 10 includes an upper mold base 13 , which can be a rectangular plate made of cast iron, cast steel or aluminum alloy, and during the operation of the sheet metal mold 10 , the upper mold base 13 can play a fixing and supporting role.

[0049] The punch assembly 12 includes a connecting rod 122, a connecting rod fixing seat 123 and an upper stripping plate 124. The connecting rod 122 is a mechanical part that can convert linear motion into curvilinear motion. One end of the connecting rod 122 can be rotatably connected to the punch 121 by setting a rotating shaft, so that the punch 121 can be driven to rotate to extrude the workpiece 200 for bending under the rotation of the connecting rod 122. When the sheet metal mold 10 is in a closed mold state, the angle A between the axis of the connecting rod 122 and the gravity direction is less than 25 degrees, so that the stress on the connecting rod 122 under the drive of the driving member 20 can be reduced, the damage of the connecting rod 122 can be avoided, and the service life of the connecting rod 122 can be increased. And the angle A can be determined according to actual conditions. For example, the degree of the angle A can be 22 degrees, 20 degrees, 15 degrees, 13 degrees, 10 degrees, 5 degrees, 0 degrees, etc. In this way, by adjusting the angle between the axis of the connecting rod 122 and the direction of gravity to be less than 25 degrees when the sheet metal mold 10 is in a closed mold state, the stress on the connecting rod 122 can be reduced, preventing the connecting rod 122 from being damaged by the drive of the driving member 20, thereby increasing the service life of the connecting rod 122.

[0050] Optionally, the angle A between the axis of the connecting rod 122 and the direction of gravity may be less than 50 degrees. For example, the angle A may be 45 degrees, 40 degrees, 38 degrees, 35 degrees, 30 degrees, 28 degrees, etc. When the angle A between the axis of the connecting rod 122 and the direction of gravity is between 25 degrees and 50 degrees, the connecting rod 122 can drive the male mold 121 to rotate under the drive of the driving member 20, and the stress on the connecting rod 122 is greater than the stress on the connecting rod 122 when the angle A between the axis of the connecting rod 122 and the direction of gravity is less than 25 degrees.

[0051] The connecting rod fixing seat 123 is set on the side of the upper die seat 13 close to the punch assembly 12 by screws or welding. One end of the connecting rod fixing seat 123 can be rotatably connected to the connecting rod 122 by setting a rotating shaft, so that the connecting rod fixing seat 123 can be used to transmit the power of the driving member 20 to drive the connecting rod 122 to rotate. For example, under the drive of the driving member 20, the upper die seat 13 drives the connecting rod fixing seat 123 to move in the direction of gravity, and the connecting rod fixing seat 123 can squeeze the connecting rod 122 to drive the workpiece to rotate, so that the connecting rod 122 can drive the punch 121 to rotate around the rotating axis center B1 of the punch 121, and then the punch 121 squeezes the workpiece 200 to a preset bending angle.

[0052] The upper stripping plate 124 can be fixedly connected to the upper die holder 13, and the upper stripping plate 124 can squeeze the workpiece 200 under the drive of the driving member 20 to fix the workpiece 200. In addition, the upper stripping plate 124 can be rotatably connected to the punch 121 by setting a rotating shaft, so as to provide support for the punch 121 without restricting the punch 121 from bending the workpiece 200.

[0053] See also Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a support plate 14 and an elastic member 15. The support plate 14 and the punch assembly 12 are respectively located on opposite sides of the upper mold base 13. The support plate 14 is fixedly connected to the upper mold base 13. The elastic member 15 passes through the upper mold base 13. One end of the elastic member 15 is connected to the support plate 14, and the other end of the elastic member 15 is spaced apart from the upper stripping plate 124. The support plate 14 is configured to press the upper stripping plate 124 through the elastic member 15 when it is driven, so as to drive the elastic member 15 to squeeze the upper stripping plate 124.

[0054] In this way, by arranging the elastic member 15 and the support plate 14 in the sheet metal mold 10, and connecting one end of the elastic member 15 to the support plate 14, when the support plate 14 is driven, the support plate 14 can squeeze the elastic member 15, so that the elastic member 15 can fix the workpiece 200, and the elastic member 15 can play a buffering role during the bending process to avoid damage to the workpiece 200 during the driving process.

[0055] Specifically, the sheet metal mold 10 includes a support plate 14 and an elastic member 15. The support plate 14 can be a rectangular plate made of cast iron, cast steel or aluminum alloy, the punch 121 can be fixedly connected to the upper die base 13 through a footrest, the support plate 14 and the punch assembly 12 are arranged on two opposite sides of the upper die base 13, and the support plate 14 can be used to carry the driving member 20, so that the driving member 20 can squeeze the support plate 14.

[0056] The elastic member 15 can be a nitrogen spring or a metal coil spring or other elastic device. A through hole is provided on the upper die base 13 so that the elastic member 15 can pass through the upper die base 13, and one end of the elastic member 15 can be fixed to one side of the support plate 14 by a connection method such as a nut, while the other end of the elastic member 15 can be spaced apart from the upper release plate 124. The distance between the elastic member 15 and the upper release plate 124 can be 1 mm to 2 mm, so as to prevent the nitrogen spring from being pre-tightened on the upper release plate 124 under the action of gravity.

[0057] When the sheet metal mold 10 is closed, the driving member 20 can drive the support plate 14 to move along the gravity direction, so that the support plate 14 can squeeze the elastic member 15, so that the elastic member 15 squeezes the upper stripping plate 124 to fix the workpiece 200.

[0058] For example, when the workpiece 200 needs to be bent at angles of 0 degrees, 30 degrees, 60 degrees, and 90 degrees, respectively, the driving member 20 drives the support plate 14 to move along the gravity direction at different displacements, and the elastic member 15 will also move accordingly.

[0059] See also Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a fixed shaft 16, the fixed shaft 16 is fixedly connected to the upper stripping plate 124, and the punch 121 is rotatably connected to the fixed shaft 16.

[0060] In this way, by fixing the fixed shaft 16 on the upper stripping plate 124 , the punch 121 can be rotatably connected around the fixed shaft 16 , so that the punch 121 can bend the workpiece 200 when rotating around the fixed shaft 16 .

[0061] Specifically, the sheet metal mold 10 further includes a fixed shaft 16, which can be used to connect the punch 121 and the upper stripping plate 124. The fixed shaft 16 is fixed to one end of the upper stripping plate 124 close to the punch 121 by means of a nut or welding; a through hole is provided on the fixed shaft 16, and the punch 121 can be rotatably connected to the fixed shaft 16 by setting a rotating shaft through the through hole, so that the punch 121 can rotate around the rotating shaft passing through the fixed shaft 16 under the drive of the driving member 20.

[0062] See also Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes a contour sleeve 19 , which connects the upper mold base 13 and the upper stripping plate 124 , and is used to fix the upper stripping plate 124 .

[0063] In this way, by setting the equal height sleeve 19 in the sheet metal mold 10, and the equal height sleeve 19 connecting the upper mold base 13 and the upper stripping plate 124, the upper stripping plate 124 can be fixed and supported when the sheet metal mold 10 is in the mold opening state.

[0064] Specifically, the sheet metal mold 10 also includes a contour sleeve 19, which can be used to fix the upper stripping plate 124 and adjust the distance between the upper stripping plate 124 and the upper mold base 13. Among them, one end of the contour sleeve 19 can be fixed to the upper mold base 13 by a nut or welding, and the other end of the contour sleeve 19 can be fixed to the upper stripping plate 124 by a nut or welding, so that the contour sleeve 19 can prevent one end of the upper stripping plate 124 from moving due to gravity when the sheet metal mold 10 is in an open mold state. When the sheet metal mold 10 is in a closed mold state, the contour sleeve 19 can squeeze the upper stripping plate 124, and the upper stripping plate 124 squeezes the workpiece 200, so that the workpiece 200 can be fixed.

[0065] See also Figures 3 to 6 In some embodiments, the sheet metal mold 10 includes an upper mold base 13, a lower mold base 17 and a limiting column 18. The die assembly 11 is arranged on the side of the lower mold base 17 facing the upper mold base 13, and the punch assembly 12 is arranged on the side of the upper mold base 13 facing the lower mold base 17. The limiting column 18 connects at least one of the upper mold base 13 and the lower mold base 17. The limiting column 18 is used to limit the distance between the upper mold base 13 and the lower mold base 17 when the sheet metal mold 10 is in a closed mold state to control the bending angle of the workpiece 200.

[0066] In this way, by setting a limit column 18 between the upper die base 13 and the lower die base 17, the limit column 18 can limit the distance between the upper die base 13 and the lower die base 17, and the driving member 20 cannot continue to drive the upper die base 13 to move, thereby controlling the bending angle of the workpiece 200 and improving the accuracy of the workpiece 200 to reach a preset angle.

[0067] Specifically, the sheet metal mold 10 further includes an upper mold base 13, a lower mold base 17 and a limiting column 18, which can respectively serve as supporting components of the sheet metal mold 10. Among them, the female mold assembly 11 is arranged on the side of the lower mold base 17 facing the upper mold base 13 by means of nuts or welding, and can support the female mold assembly 11. The male mold assembly 12 is arranged on the side of the upper mold base 13 facing the lower mold base 17, and the upper mold base 13 can support the male mold assembly 12.

[0068] The limiting column 18 can be a cylinder or prism made of rubber, stainless steel or metal. The limiting column 18 is arranged between the upper die base 13 and the lower die base 17, and is fixedly connected to at least one of the upper die base 13 and the lower die base 17 by nuts or welding. For example, the limiting column 18 can be arranged on the upper die base 13 by nuts or welding; the limiting column 18 can be arranged on the lower die base 17 by nuts or welding; the limiting column 18 can be arranged on the upper die base 13 and the lower die base 17 by nuts or welding. Therefore, when the sheet metal mold 10 is in a closed mold state, the limiting column 18 can limit the distance between the upper die base 13 and the lower die base 17, and then after the workpiece 200 is bent to a preset angle, the limiting column 18 can limit the punch 121 from continuing to bend the workpiece 200, thereby improving the accuracy of the bending angle of the workpiece 200.

[0069] Optionally, when the limiting column 18 is respectively arranged on the upper die base 13 and the lower die base 17, the limiting column 18 can be divided into a first limiting column 18 and a second limiting column 18. The first limiting column 18 is arranged on the upper die base 13 by means of a nut or welding, and the second limiting column 18 is arranged on the lower die base 17 by means of a nut or welding, and the length of the first limiting column 18 is greater than the length of the second limiting column 18. Driven by the driving member 20, the upper die base 13 moves toward the lower die base 17, so that the first limiting column 18 can press against the second limiting column 18, thereby limiting the distance between the upper die base 13 and the lower die base 17. When it is necessary to change the length of the first limiting column 18 and the second limiting column 18, limiting blocks can be added to the first limiting column 18 and the second limiting column 18 to increase the length.

[0070] For example, when the bending angle of the workpiece 200 required is 0 degrees, the limit column 18 will not limit the distance between the upper die base 13 and the lower die base 17; when the bending angle of the workpiece 200 required is 30 degrees, 60 degrees, and 90 degrees, the limit column 18 can limit the distance between the upper die base 13 and the lower die base 17.

[0071] See also Figures 3 to 6 In some embodiments, the die assembly 11 includes a die 111 and a die fixing block 112 , the die 111 is disposed on the die fixing block 112 , the die fixing block 112 is disposed on the lower die base 17 , and the lower die base 17 is used to support the die fixing block 112 .

[0072] In this way, by setting the die 111 and the die fixing block 112 in the sheet metal mold 10, the workpiece 200 on the die 111 is squeezed onto the die 111 by the upper stripping plate 124 under the drive of the driving member 20, so that the die 111 and the die fixing block 112 can fix and support the workpiece 200 during the bending process.

[0073] Specifically, the die assembly 11 also includes a die 111 and a die fixing block 112. The die 111 may be a rectangular block made of metal material, and the die 111 may carry and fix the workpiece 200. For example, when the sheet metal mold 10 is in an open mold state, the workpiece 200 is placed on the die 111, and under the drive of the driving member 20, the upper stripping plate 124 may squeeze the workpiece 200 on the die 111, so that when the sheet metal mold 10 is in a closed mold state, the upper stripping plate 124 squeezes the workpiece 200 to fix the workpiece 200 on the die 111.

[0074] The die fixing block 112 can be used to fix the die 111. One end of the die fixing block 112 is fixed to the lower die base 17 by a nut or welding, and the die 111 is fixed to the other end of the die fixing block 112 by a nut or welding.

[0075] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are optional and cannot be understood as limitations to the present application. A person skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A sheet metal mold, characterized in that: The sheet metal mold comprises: A die assembly, the die assembly being used to carry a workpiece, the workpiece comprising a first portion protruding from the die assembly; A punch assembly, wherein the punch assembly includes a rotatable punch, the punch being used to contact the first portion in a surface-to-surface contact manner, the center of the rotation axis of the punch coincides with the center of the bending arc of the first portion, and the punch assembly is configured such that when being driven, the punch rotates around the center of the rotation axis of the punch so that the punch bends the workpiece through the first portion.

2. The sheet metal mold according to claim 1, characterized in that: The die assembly includes a guide block, the guide block includes a first arc surface, the die includes a second arc surface, the first arc surface is in contact with the second arc surface, and the guide block is used to guide the rotation of the die through the cooperation between the first arc surface and the second arc surface when the die rotates around the center of the die's rotation axis.

3. The sheet metal mold according to claim 1, characterized in that: The sheet metal mold includes an upper mold base, and the punch assembly includes a connecting rod, a connecting rod fixing base and an upper stripping plate. The connecting rod fixing base is installed on the upper mold base, one end of the connecting rod is rotatably connected to the connecting rod fixing base, the other end of the connecting rod is rotatably connected to the punch, and the punch is rotatably connected to the upper stripping plate. The upper mold base is configured such that when it is driven, the upper mold base drives the connecting rod to move to drive the punch to rotate around the center of the rotation axis of the punch.

4. The sheet metal mold according to claim 3, characterized in that: When the sheet metal mold is in a closed state, the angle between the axis of the connecting rod and the direction of gravity is less than 25 degrees, so as to reduce the stress on the connecting rod.

5. The sheet metal mold according to claim 3, characterized in that: The sheet metal mold includes a support plate and an elastic member, the support plate and the punch assembly are respectively located on opposite sides of the upper mold base, the support plate is fixedly connected to the upper mold base, the elastic member passes through the upper mold base, one end of the elastic member is connected to the support plate, and the other end of the elastic member is spaced apart from the upper release plate, and the support plate is configured to press the upper release plate through the elastic member when being driven, so as to drive the elastic member to squeeze the upper release plate.

6. The sheet metal mold according to claim 3, characterized in that: The sheet metal mold comprises a fixed shaft, the fixed shaft is fixedly connected to the upper stripping plate, and the male mold is rotatably connected to the fixed shaft.

7. The sheet metal mold according to claim 3, characterized in that: The sheet metal mold includes a contour sleeve, which connects the upper mold base and the upper stripping plate, and is used to fix the upper stripping plate.

8. The sheet metal mold according to claim 1, characterized in that: The sheet metal mold includes an upper mold base, a lower mold base and a limiting column. The concave mold assembly is arranged on the side of the lower mold base facing the upper mold base, and the punch mold assembly is arranged on the side of the upper mold base facing the lower mold base. The limiting column connects at least one of the upper mold base and the lower mold base. The limiting column is used to limit the distance between the upper mold base and the lower mold base when the sheet metal mold is in a closed state to control the bending angle of the workpiece.

9. The sheet metal mold according to claim 8, characterized in that: The die assembly comprises a die and a die fixing block, the die is arranged on the die fixing block, the die fixing block is arranged on the lower die seat, and the lower die seat is used for carrying the die fixing block.

10. A sheet metal processing device, characterized in that: It comprises the sheet metal mold and driving component as described in any one of claims 1 to 9.

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